I'm sick of these debates over the ultimate ignition...

After reading the description,


https://en.wikipedia.org/wiki/Krytron
"Krytrons can switch currents of up to about 3000 amperes and voltages up to about 5000 volts. Commutation time of less than 1 nanosecond can be achieved, with a delay between the application of the trigger pulse and switching as low as about 30 nanoseconds."

I must say I am impressed